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Example: 50,000 # / hr. outlet capacity, inlet water entering at 60°F, deaerator
operating at 5 psi;
5.2.6.2.2 If the operating pressure is between 1 and 5 psi, and if the inlet water
temperature is between 100°F and 150°F, the steam required will be one tenth of the
outlet flow:
5.2.6.2.3 Exact Method – perform the following calculations:
5.2.6.2.3.1 With No Flashing condensate
5.2.6.2 3.2 With Flashing Condensate
6.0 ACCESSORIES
6.1 Relief Valve
The relief valve furnished is a sentinel type intended to warn of overpressure in the
vessel and may not be adequate to fully protect the equipment from excess pressure.
Since overpressure in a deaerator is a function of the entire system, the user must make
suitable provision for sufficient total relieving capacity.
The valve furnished has a hand release lever which should be operated periodically to
assure freedom of movement.
6.2 Vacuum Breaker
A vacuum breaker is furnished to protect the vessel from external pressure. An open
vacuum breaker would indicate an insufficient supply of steam within the deaerator.
Operation under this condition will result in oxygen contamination of the stored feed
water.
This unit should be checked and cleaned at regular intervals to insure proper operation.
6.3 Vessel Pressure Gauges
Pressure gauges are provided for the steam section and water inlet line. Higher or
lower pressures than normal alert the operator of a potential
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